Applications
Vacuum Transducer
Interface and usage of a Vacuum Transducer with HScope for real-time pression measurements.
Applications
Blog
Applications
Applications
DIY In-Cylinder Pressure Transducer
Make your own DIY In-Cylinder Pressure Transducer for real-time analysis with HScope.
News
HScope Update 2024/2025
1. Cursors lock for Automotive tools
The cursors can be locked so once positioned they can be moved together.
2. Infinite mode for labels tool (Automotive tool)
3. Improved LIN Decoder
LIN decoder now integrate better stats and data report. Data can be exported.
4. Waveforms search
You can search waveform by keywords.
Previous updates
Oscilloscopes
Upcoming Oscilloscopes in HScope!
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HS10X
HS101 Bluetooth – Debugging
I hope you did not have to read this content. It means something went wrong. Be armed with patience and good luck! 🙂
Deep Insight the Bluetooth Modules
Major issue of this project is in the HC-05 or HC-06 module sourcing. The market is full of different PCB versions with different firmware versions, working with different commands and with different specifications.
Due to high variety of HC-05 and HC-06 BTL modules in the market, we strongly suggest to purchase it here to have a working hardware already configured for HS101 BLT Oscilloscope.
Wrong Bluetooth Modules
Following are the modules that are not good for this project since max speed is limited to 115200. You may know that are wrong modules because they use a small chip compared to the fast ones (see pictures below).
HC-06 Bluetooth Modules
Are those usually with 4 pins and no button. They may install the firmware with HC-06 protocol and the firmware with HC-05 protocol. In the second case you have a very fast module (it can send data up to 20-25fps in HScope).
HS101 Bluetooth Firmware in the STM32 allow the setup procedure to work with both HC-06 and HC-05 protocols.
HC-05 Bluetooth Module
Since Firmware v.10.1 you can configure the HC-05 module with the Wire Setup procedure but before powering on the STM32 and HC-05 you must keep pressed the button on the HC-05 (this will allow the module to enter in AT mode).
You can see the result on the Debug serial port (pin PB10 of STM32, baud rate: 115200).
If the automatic configuration doesn’t work here is the manual procedure.
- Enter AT mode by pressing the button on HC-05 and then power the module
- Connect an USB-TTL cable to it to communicate, set the serial terminal to 38400 baud
- Send these AT commands (these are firmware depending, consider as reference):
- AT+NAME=HS-10X_ABCD (ABCD can be arbitrary)
- AT+PSWD=”0000″
- AT+UART=1382400,0,0
- Connect the HC05 to the STM32
Possible issues
It has been reported that some module cannot communicate at 1.3Mbaud. Some modules won’t allow configuration of serial port to 1382400 baud, other modules just stop to communicate after they get this configuration.
Test 1 – Does the Bluetooth module works?
You have configured the Bluetooth Module to work at 1.3Mbaud. Now shortcut RXD and TXD of the HC-06 Module and with this app (Serial Bluetooth Terminal) check if the commands you send echoes back.
However you still don’t know if the serial port is communicating at 1.3Mbaud or less (when you configured the serial speed it is possible that the AT command reply OK but actually the module did not apply the requested speed)
Test 2 – Does it communicate with STM32?
Connect the Bluetooth Module to the STM32, then use the app Serial Bluetooth Terminal to talk directly to the Bluetooth Module. Following are the configurations for this app.
- Select the Bluetooth module
- Settings -> Terminal: set to HEX
- Settings -> Send: set to HEX
Sent the following HEX string to the Bluetooth Module: 07 00 00 00 00 00 FF FF. If the Bluetooth Module can communicate with the STM at 1.3Mbaud then you should receive a reply:
Phones with issue
Has been reported that with some phone Hscope cannot see the Bluetooth module. Here the list of phones with issues:
- Xiaomi Mi9SE (Android 10)
- Huawei Mate 10 PRO (Android 10)
News
ECG with STM32 and AD8232
In this project, we will interface AD8232 ECG Sensor with HS101 Oscilloscope (based on STM32 bluepill board) and observe the ECG signal on HScope.
Read more “ECG with STM32 and AD8232”
HScope
HScope Update 2023/2024
Here are the new features developed in 2023/2024 (users with the last license purchase before 2023 can activate these features through the Update 2023/2024 in the License panel).
1. Time Control in Automotive Mode
Time unit can be set in Automotive Mode.
2. Math Duty Function
Duty function allows to detect variation in the duty cycle of an input waveform and so to find sudden variations or possible issues.
3. Automotive Paging Mode
Possibility to record at oscilloscope high rates in Automotive mode, with paging mode.
4. FFT Data Export
FFT data can be exported in CSV format.
5. Custom Report Title
Previous updates
HScope
HScope Update 2022/2023
Here are the new features developed in 2022/2023 (users with the last license purchase before 2022 can activate these features through the Update 2022/2023 in the License panel).
1. Assign Names to the Channels
It is possible to assign custom names to the channels. These names will be saved when the waveform will be saved, and also will be exported in the Report.
2. Channels Invert
Channels signal can be inverted with the Filters.
3. Filters for Math Channel
Can apply post-processing filters to the Math Channel.
4. Improved Cache Management
Better Cache Management to keep disk usage controlled. It is possible also to clear the cache in HScope Settings (System tab) – suggested for updates from old versions of HScope.
Previous updates
News
HS-ACC Building Instructions
- Project material can be found here in Github
- It is suggested to join the Telegram group to get more info and support on this project
Required parts
- x1 ESP32-WROOM Development Board (with chip ESP32-WROOM-32 version 1 or up, or ESP32-WROOM-32D or ESP32-WROOM-32E)
- x1 (or x2) ADXL345 Module
- x1 RGB LED Module (optional)
Connections Schematic
Pinout
| Sensor 1 (ADXL345) Pin | ESP32 Pin |
|---|---|
| GND | GND |
| VCC | VIN (5V) |
| CS | D27 (IO27 or GPIO27) |
| SDA | D13 (IO13 or GPIO13) |
| SCL | D14 (IO14 or GPIO14) |
| Sensor 2 (ADXL345) Pin | ESP32 Pin |
|---|---|
| GND | GND |
| VCC | VIN (5V) |
| CS | D26 (IO26 or GPIO26) |
| SDA | D13 (IO13 or GPIO13) |
| SCL | D14 (IO14 or GPIO14) |
Long Wiring Setup
In case you need to use long wires for the sensors, it is suggested to use Ethernet cables for the connections. In addition you can use also a RJ45 Breakout Board as the following:
PCB Built
You can also build this device with the PCB you will find here which include:
- PCB & Schematic for Main board for 1 or 2 sensors
- PCB & Schematic for Sensor module
- Components List
HScope
HScope Update 2020/2021
Here are the new features developed in 2020/2021 (users with the last license purchase before 2020 can activate these features through the Update 2020/2021 in the License panel).
1. Waveform Histogram
Histograms are graphical representations of data which divides it into intervals or bins. These intervals/bins are plotted on a bar chart such that the bar height relates to the number of data points inside each interval/bin as a function of the data value.
The following screenshots shows a series of typical waveforms, withthe associated histograms of the sample values in the blue bar graph.
The histogram gives us an approximation of the probability density function (pdf) of a set of values. The shape of the pdf tells us about the underlying process. In the case of the sine wave, remember that the rate of change of the sine is maximum at the zero crossings and minimum at the positive and negative peaks. When we sample the waveform uniformly, we get more samples at the peaks and much fewer at the zero crossings. This is due to the differences in the rate of change, thus explaining the shape of the histogram. For the case of the triangle wave, the rate of change is constant, so samples are taken evenly. This results in what is called a uniform distribution.
Setting up a Histogram
Press the stats button in the channel of interest until the Histogram chart appear.
2. PWM Generator
This module allow to use the output calibration pin (generally set to 1KHz square wave) to generate a PWM output signal. Max frequency and duty cycle range depends on the device (detail are in each oscilloscope page).
3. Alarm cursors
Horizontal cursors can be alarmed to produce a sound when the signal goes over or under the cursor level. When you select an horizontal cursor you can see the bell icon on the top and click it to select the kind of alarm (over / below / off).
In the settings you can select the alert sound kind.
4. Four Channels Support
4 Channels support for Import/Export files. Currently only Hantek 1008 support 4 channels acquisition.
5. Upgraded XY Module
- Improved performances for real-time processing
- Added fading graphic effect
- Renewed UI for bigger graph space
6. Extended Export Capabilities
- With the Automotive Module it is possible to export CSV files up to 1ML data points (previous limit: 64K points).
- It is possible to export waveform also in a temporary cloud space (2 weeks retention) and quick share the waveform number for other users to import.
7. Demodulation Function in Math Module
- Added demodulation function for vibration sensors.
8. FFT Improvements
- Support for channel selection (including Math channel)
- Vertical Cursor show harmonics
How To
Repairing ESP32
How to repair an ESP32 development board (common cases).
Read more “Repairing ESP32”
HS10X
HS101 Bluetooth
You can build a battery powered, portable 1 Channel oscilloscope with this variant of the HS101 DIY Oscilloscope (based on STM32F103 Blue Pill). It has the lowest noise among the HS101 variants. It can be implemented with several input ranges and uses HScope Android app.
This project is difficult to build due to the different HC-06 Bluetooth modules sold in the market. Under you can find the link where to buy a Bluetooth Module suiteable and already configured for this project.
Warning: Phones should have at least Bluetooth V.4.0 to work at highest speed with HC-06 Bluetooth Module.
Technical Specifications
| Channels | 1 |
| Input Range | (according the implemented input stage) |
| Sampling Rate / Bandwidth | (according the implemented input stage) |
| Input Noise | < 0.08% noise @ 900KSa/s (<0.03% @ 100KSa/s, test results with the Black Pill) |
| Samples | 1024 (each scan) |
| Input Impedance | (according the implemented input stage, 10kOhm or 1MOhm) |
| Modules Supported | Automotive Module @ 10 KSa/s |
| Working Range | Without any boxing, the connection has been tested to works at full speed up to 4m distance. |
Built
You need just an HC-05 or HC-06 Bluetooth module to transform an HS101 Oscilloscope into Bluetooth oscilloscope.
Due to high variety of HC-05 and HC-06 BTL modules in the market, we strongly suggest to purchase it here to have a correct hardware to make this device.
Full schematic of HS101 Bluetooth PRO is available on EasyEDA. Following is the connection for the HC-06 Bluetooth module (for the HC-05 Module connect to B15 instead of A8).
Prepare the STM32F103 Blue Pill
1. Flash the STM32 with the specific Firmware for Bluetooth. Firmware is available on STM32Utils flashing utility.
Configuration of HC-05/06
The HS101 BLT firmware in the STM32 has a procedure to configure the HC-05/06 module at the first time.
- First time connect the HC-06 Bluetooth Module as in picture and connect the
Setup Wire. If you suspect you have an HC-06 Module connect the setup wire to pin A8. For HC-05 Module connect it to pin B15. - Power on (or press on RESET button). The STM32 green LED (PC13) should blink during the setup phase (it may run for 1 min). If the setup was successful the green LED will flash 1 second for 3 times (see demo video 1 or demo video 2). You can follow the configuration procedure with a serial terminal on the debug port at pin B10 (115200 baud).
- Remove the
Setup Wire, assemble the analog part and power on. On phone search for the bluetooth devices and pair the device called HS10X-XXXX with password 0000 (first time it may require some time for the phone to show the bluetooth name). Pairing is required just at the first time.
Tests
After the bluetooth has been paired with the phone, just open HScope app, be sure that:
- The app has localization permission granted
- Bluetooth and Localization are ENABLED on the device
- Bluetooth communication is enabled in HScope settings
HScope should detect the bluetooth oscilloscope automatically and start to show the signal.
It is not working!
If something went wrong you may check HERE
Performances
– Refresh rate: 7-12 FPS (20-25 FPS with some Bluetooth Module, see under)
– No. samples each scan: 1024
– Real time continous acquisition: 10KSa/sNote: Reat time continous acquisition is critical to get with Bluetooth. It has been found that some phone could have issue with Bluetooth fast communication, this create corruption of data. To verify if your device has this issue enable FPS/SPS visualization. It should show always 9-10FPS for rates equal or less than 10KSa/s.
Battery Performances
You can use the HS101 Bluetooth with a standard USB battery pack connected to the micro-USB or you can implement your own power with one 3.7V Lithium battery and a small battery charger with 5V UPS circuit like here.
In case you use a 18650 type battery you can connect it directly to the 5V pin since it maximum voltage is around 4.2V. Tests on this kind of battery (2000mA capacity) with HS101 PRO showed continous bluetooth transmission up to 16 hours without problems (see graph on the right). When the battery voltage is around 3.6V some noise start to show up in the acquired data but the bluetooth comunication does not get interrupted.
Noise Considerations
It has been found that no additional noise is generated by the bluetooth module. Bluetooth + Battery configuration provide less overall noise than the standard USB connection.
Applications
– CAN Bus Dongle
– Relative Compression Test Dongle
Built by Users
Built by Андрюха (2022)
Built by Bruno (2020)
Built by Mikael (2020)
Built by Denis (2019)
