SparkFun 70C
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 | |
| Status | patches up, not yet merged. |
|---|---|
| Source code | serial-dmm |
| Counts | 6000 |
| IEC 61010-1 | CAT II |
| Connectivity | USB (standard cable) |
| Measurements | voltage, current, resistance, continuity, diode, capacitance, frequency, temperature |
| Features | max/min, data hold, relative, backlight |
| Website | SparkFun |
The SparkFun 70C is a 6000 counts, CAT II handheld digital multimeter with USB connectivity. It appears to be heavily based on the Victor 70C, but with a USB to serial adapter instead of a USB HID device adapter, and different trimpot adjustments.
Hardware
Unverified Hardware (assumptions based on Victor 70C)
Some parts on PCB are not clear enough to read.
- NXP HEF4066BT quadruple bilateral switches
- Microchip TC7660E charge pump DC-to-DC voltage converter
- Texas Instruments 27L2C precision dual op-amp
Note: the USB/HID chip is in the multimeter (not in the USB cable/connector) for this device. The device is connected to the PC using a standard USB cable (without any internal logic/chip).
Photos
Device, front
PCB, top
PCB, bottom
DMM/LCD chip
LCD
Highly Generic Packaging
Package Contents
Protocol
See FS9922-DMM4.