MD3003 DS18S20
The MD3003 is the ever-popular Dallas/Maxim DS18S20 in a TO-92 package.
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MD3014 DS2405
The DS2405 is a single channel input/output sensor compatible with the 1-Wire bus. See the TEMP08 FAQ page (FAQ item 29) for suggested uses. This sensor is supplied in a TO-92 package.
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MD3023 DS2406
The DS2406 is a single channel input/output sensor compatible with the 1-Wire bus. This sensor is supplied in a TO-92 package and is RoHS compliant.
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MD3020 Series Temperature Sensor
Schematic and Parts List Manual available here.
Options available
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MD3020A: just the bare PCB. A bread-board area is included.
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MD3020B: DS18S20 sensor with 1 3-terminal strip and jumper selection for local or parasitic mode. Terminal strip connects +5VDC, Ground and the One Wire Bus (DQ).
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MD3020C: Same as Option B but with the addition of 2 RJ-12 connectors wired in parallel (all pins the same on both)
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MD3020E: Same as Option C but with the addition of a locally powered version HIH4000 humidity sensor that is software equivalent to the Dallas/Maxim DS1910. Also included, is a voltage regulator on-board that converts up to 30VDC to the 5VDC required for the humidity sensor and for locally powered downstream sensors.
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MD3020G: a DS2406 powered Relay output sensor
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MD3020H: a DS2406 powered LED
All options use the same PCB - add your own options at your convenience by adding the required parts.
Jumper J3 is used to select Parasitic (P) or Local (L) powering for the DS18S20 sensor. The DS2438 used with the Humidity Sensor requires either +5VDC or the 9 to 30 VDC input.
Important note: If you are using Parasitic powering, you must set the Sensor Option to P.
The RJ-12 pinout is shown in the figure below. The schematic for the PCB is shown here.
Actual size is 1.9 by 2.1 inches.
The pin-out for the RJ-12 connector is:
A view of an MD3020D (left) and an MD3020B (right)
Order now:
MD3020A |
Bare PCB |
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$6.00 |
MD3020B |
Temperature sensor |
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$9.00 |
MD3020C |
As MD3020C but with RJ-12 connectors added |
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$12.00 |
MD3020E |
Humidity and Temperature sensor |
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$50.00 |
MD3020G |
1-Wire Relay Output |
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$18.00 |
MD3020H |
1-Wire LED Display |
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$15.00 |
MD208x 1WIO Sensor - A Multi-Purpose Sensor
For details, go here.
Options available
| MD2082 | the bare PCB |
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$20.00 |
| MD2083 | 4 SPDT relay outputs |
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$50.00 |
| MD2084 | 4 Opto-Isolator inputs |
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$40.00 |
| MD2088 | 8 LED displays |
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$35.00 |