Difference between revisions of "HYELEC MS8236"
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{{Infobox multimeter | {{Infobox multimeter | ||
| image = [[File: | | image = [[File:Sigrok_logo_no_text_transparent_512.png|180px]] | ||
| name = HYELEC MS8236 | | name = HYELEC MS8236 | ||
| status = planned | | status = planned | ||
| source_code_dir = | | source_code_dir = | ||
| counts = 6000 | | counts = 6000 | ||
| categories = CAT III (1000V) | | categories = CAT III (1000V) / CAT IV (600V) | ||
| connectivity = USB | | connectivity = USB | ||
| measurements = voltage, resistance, diode, capacitance, frequency, current, hFE, temperature | | measurements = voltage, resistance, diode, capacitance, frequency, current, hFE, temperature | ||
| features = autorange, true-rms, data hold, delay hold, min/max, relative, bargraph, backlight | | features = autorange, true-rms, data hold, delay hold, min/max, relative, bargraph, backlight | ||
| website = | | website = [http://www.hy-elec.com/En/Default.aspx hy-elec.com] | ||
}} | }} | ||
The '''HYELEC MS8236''' is a 6000 counts, CAT III (600V) handheld digital multimeter with USB connectivity. | The '''HYELEC MS8236''' is a 6000 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with USB connectivity. | ||
See [[HYELEC MS8236/Info]] for more details (such as '''lsusb -v''' output) about the device. | See [[HYELEC MS8236/Info]] for more details (such as '''lsusb -v''' output) about the device. | ||
| Line 18: | Line 18: | ||
== Hardware == | == Hardware == | ||
* ''' | * '''8-bit MCU with 4x40 LCD driver and 18-bit ADC''': [http://www.hycontek.com/e-page2-HY11P.html Hycontek HY11P14] ([http://www.hycontek.com/attachments/MSP/DS-HY11P14_EN.pdf datasheet], [http://www.hycontek.com/attachments/MSP/UG-HY11S14_EN.pdf user's guide]) | ||
* '''USB to serial IC''': CH340G | * '''USB to serial IC''': [http://www.wch.cn/product/CH340.html WCN CH340G] ([http://www.wch.cn/downfile/79 datasheet]) | ||
== Photos == | == Photos == | ||
| Line 47: | Line 47: | ||
{| border="0" style="font-size: smaller" class="alternategrey sigroktable" | {| border="0" style="font-size: smaller" class="alternategrey sigroktable" | ||
|- | |- | ||
! Bit 7 | ! Bit 7 !! Bit 6 !! Bit 5 !! Bit 4 !! Bit 3 !! Bit 2 !! Bit 1 !! Bit 0 | ||
! Bit 6 | |||
! Bit 5 | |||
! Bit 4 | |||
! Bit 3 | |||
! Bit 2 | |||
! Bit 1 | |||
! Bit 0 | |||
|- | |- | ||
| DP | | DP || A || B || C || D || E || F || G | ||
| A | |||
| B | |||
| C | |||
| D | |||
| E | |||
| F | |||
| G | |||
|} | |} | ||
'''Example''': In the protocol a byte of '''0x3F''' ('''0 0111111''') represents the digit '''9''' on the LCD, where the decimal point is '''not''' displayed (bit 7 is not set). All other bits except for bit 6 (segment A, see above) are set | '''Example''': In the protocol a byte of '''0x3F''' ('''0 0111111''') represents the digit '''9''' on the LCD, where the decimal point is '''not''' displayed (bit 7 is not set). All other bits except for bit 6 (segment A, see above) are set, i.e. the respective LCD segments are displayed. | ||
== Resources == | == Resources == | ||
* [http:// | * [http://de.aliexpress.com/wholesale?SearchText=hyelec+ms8236 Random aliexpress.com sellers] | ||
* [https://www.youtube.com/watch?v=ATL0LDTqyQQ Disassembly video] | * [https://www.youtube.com/watch?v=ATL0LDTqyQQ Disassembly video] | ||
Revision as of 21:52, 22 September 2015
 | |
| Status | planned |
|---|---|
| Counts | 6000 |
| IEC 61010-1 | CAT III (1000V) / CAT IV (600V) |
| Connectivity | USB |
| Measurements | voltage, resistance, diode, capacitance, frequency, current, hFE, temperature |
| Features | autorange, true-rms, data hold, delay hold, min/max, relative, bargraph, backlight |
| Website | hy-elec.com |
The HYELEC MS8236 is a 6000 counts, CAT III (1000V) / CAT IV (600V) handheld digital multimeter with USB connectivity.
See HYELEC MS8236/Info for more details (such as lsusb -v output) about the device.
Hardware
- 8-bit MCU with 4x40 LCD driver and 18-bit ADC: Hycontek HY11P14 (datasheet, user's guide)
- USB to serial IC: WCN CH340G (datasheet)
Photos
Multimeter:
TODO.
USB cable:
Standard USB to miniUSB.
Protocol
TODO.
The device's LCD segments are layed out as follows:
| G | ||
| C | F | |
| B | ||
| A | E | |
| D |
To the left of each LCD digit there is another segment which represents a dot / decimal point (DP).
An LCD segment is represented in the protocol as follows:
| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
|---|---|---|---|---|---|---|---|
| DP | A | B | C | D | E | F | G |
Example: In the protocol a byte of 0x3F (0 0111111) represents the digit 9 on the LCD, where the decimal point is not displayed (bit 7 is not set). All other bits except for bit 6 (segment A, see above) are set, i.e. the respective LCD segments are displayed.