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STD 6 channel Isolated Meter

License: CERN Open Hardware License

Mode: Editors' pick

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Update time: 2024-03-07 13:11:25
Creation time: 2022-02-20 00:34:22
Description

Isolated channels of low voltage and current meter for independent and universal measurement system based on Raspberry Pico.

 

For voltage there is autoranging using the internal PGA with 1x to 8x gain. Input impedance is for now 160 kOhm with highest input voltage of around 32 V. Current input uses shunt resistor on board, optimal voltage drop for full scale on 8x gain is 0.25 V. 0.1 Ohm shunt means -2.5 to +2.5 A range .

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ID Name Designator Footprint Quantity Contributor
1 10uF C1,C2,C23 CAP-SMD_L3.2-W1.6-R-RD 3 TAJA106K016RNJ
2 100nF C3,C4,C11,C12,C13,C14,C15,C16,C17,C18,C19,C20,C21,C22,C24,C25 C0603 16 CC0603KRX7R9BB104
3 1uF C5,C6 C0805 2 CL21B105KBFNNNE
4 10uF C7,C8 C0805 2 CL21A106KAYNNNE
5 27pF C9,C10 C0603 2 CL10C270JB8NNNC
6 1N5819WS D1,D2 SOD-323_L1.8-W1.3-LS2.5-RD 2 1N5819WS
7 SMBJ5.0A_C10204 D4 SMB_L4.6-W3.6-LS5.3-R-RD 1 SMBJ5.0A_C10204
8 M7_C95872 D7,D8,D9,D5,D6 DO-214AC_L4.3-W2.7-LS5.3-RD 5 M7_C95872
9 Header-Male-2.54_1x3 H1 HDR-TH_3P-P2.54-V-M-1 1 Header-Male-2.54_1x3
10 Header-Male-2.54_1x4 H2 HDR-TH_4P-P2.54-V-M 1 Header-Male-2.54_1x4
11 19-217/GHC-YR1S2/3T LED1,LED2,LED3,LED4 LED0603-R-RD 4 19-217/GHC-YR1S2/3T
12 27.4Ω R2,R3 R0603 2 0603WAF274JT5E
13 1kΩ R4,R5,R9,R14 R0603 4 0603WAF1001T5E
14 5.1kΩ R6,R7,R11,R12 R0603 4 0603WAF5101T5E
15 220Ω R8,R13 R0603 2 0603WAF2200T5E
16 10kΩ R10,R17,R18,R16 R0603 4 0603WAF1002T5E
17 JUMPER-PAD-2-NOYES_SILK SJ3,SJ1,SJ2 PAD-JUMPER-2-NO_YES_SILK 3 JUMPER-PAD-2-NOYES_SILK
18 TS-1187A-B-A-B SW1,SW2 SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 2 TS-1187A-B-A-B
19 SRV05-4-P-T7 TV1 SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR 1 SRV05-4-P-T7
20 RP2040 U1 LQFN-56_L7.0-W7.0-P0.4-EP 1 RP2040
21 P25Q80H U2 SOIC-8_150MIL 1 P25Q80H
22 MCP3421A0T-E/CH U3 SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR 1 MCP3421A0T-E/CH
23 π122U31 U4 SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL 1 π122U31
24 W25Q16JVSSIQ U5 SOIC-8_L5.3-W5.3-P1.27-LS8.0-BL 1 W25Q16JVSSIQ
25 B0505S-1WR3 U6 PWRM-TH_B0503S-1WR2 1 B0505S-1WR3
26 HT7533-1_C14289 U7 SOT-89-3_L4.5-W2.5-P1.50-LS4.2-BR 1 HT7533-1_C14289
27 128x32 OLED U10 128X32 OLED 1 128x32 OLED
28 USB3.1C16PFSMT USBC1 USB-C-SMD_TYPE-C-USB-17 1 USB3.1C16PFSMT
29 12MHz X1 OSC-SMD_4P-L3.2-W2.5-BL 1 X322512MSB4SI
30 nSMD005 F1 F1206 1 nSMD005
31 HDR-M-2.54_1x1 J1,J2 HDR-M-2.54_1X1 2 HDR-M-2.54_1x1
32 0.05Ω R1 R2728 1 LR2728-24R050F1
33 150kΩ R15 R0805 1 0805W8F1503T5E
34 Electrical Lead Connector U8,U9 ELECTRICAL LEAD CONNECTOR 2 Electrical Lead Connector https://lcsc.com/product-detail/Banana-Connectors-Alligator-Clips-Test-Rings_Changzhou-Amass-Elec-24-301_C99097.html

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