ERRATA
Easy PIC'n - Versions 3.0 and Version 3.1
Easy Microcontrol'n - Version 4.0
When constructing the circuit, the 8 port B LEDs should be positioned in a row on your circuit board so that they are in numerical order with bit 0 on the right as you view the board when using it (bit 7 on the left).
Page 126 -- Note: It ....... LED to turn off
In the 8th line of code beginning with the label "ltmr", change "0xf5" to 0xf6".
PIC'n Up The Pace - Versions 1.0 and 1.1
Page 174 - The 2nd, 3rd, and 4th equations counting up from the bottom of the page should end with +5. The last equation at the bottom of the page should not have a minus sign after the = sign. The first equation at the top of the next page should not have a minus sign after the two = signs. The result is +4.
Microcontrol'n Apps - - Version 2.0
Table of Contents, 5th page -- References to pages 353 and 354 PIC12F629/675
Pages 57 and 59--
count2 equ 0x0d
Page 94-- The text in the drawing for instruction 0x03 should read (0x04 was omitted):
0x03 ASCII character and display RAM address follow - send character to display RAM 0x04 Hex byte follows - convert to ASCII and display
Page 139-- Delete period between Hi/lo.won't
Page 164-- In code near label "cycle step", comment should read" :send volts to d/a", not "a/d".
Page 168-- The Offset Amplifier Gain = 1 is a nominal value. The Scaling Amplifier Gain = 4 is a nominal value.
Page 170-- The nominal Offset Adjust resistance is 100 K. The nominal Scale Adjust resistance is 400 K.
Page 189-- The first sentance should begin with "The ADC0831 may be .....
Pages 200, 201, 207, 379, and 391-- The least significant register bit should be labeled "0". This illustrates how easily we can replicate errors!
Page 203-- The LED on the left should be labeled "9", not "10".
Page 255-- All "C" should be "°C".
Page 276-- On fourth line, comment should read ";clear port B, bit 4
Page 319-- Fraction should be 1 sec/256 µ sec = 3906
Page 359-- In the matrix/diagram, Digital I/O vs. MCLR should be Digital input vs. MCLR.
Page 367-- Delete indentation/notch in left side of PIC16F628 outline. The pins are not shown in their physical locations.
Page 374-- Under heading "PORTS - GPIO"
The first sentence should begin
"The pins of the F675 ......"
In the table:
GP3* * Input only
Page 375-- In the table, GP3 should be Digital Input vs. MCLR.
Page 391-- Note 2) See section on PIC16F870 On-Board 10-bit A/D and data book for more information.
Page 395-- Lower right hand corner of schematic - lower ends of capacitors should be connected to ground.
PIC'n Techniques - Version 1.0
Page 37 - Schematic, PIC16C63 - "CCP1" should be over RC2, not RC3.
Page 42--In the block diagram, the prescaler values should be 1, 4, 16.
12th goto sndtst ;bytes equal
movf instr,w ;get copy of instruction
sublw a'a' ;compare with "a"
btfsc status,z ;z flag set if bytes are equal
goto chr_ram ;bytes equal
13th goto enterm ;wait for next transmission
;----------------------------------------------------------
Time'n and Count'n- Version 2.0
Serial PIC'n - Versions 1.0 and 2.0
22 lines up from bottom: bsf status,rp0 ;switch to bank 1 20 lines up from bottom: bcf status,rp0 ;switch to bank 0 7 lines up from bottom: bsf status,rp0 ;switch to bank 1 4 lines up from bottom: bcf status,rp0 ;switch to bank 0Page 209-- The last two sentences in the paragraph at the top of the page should be deleted.
Page 255-- The second full paragraph refers twice to a user register called "systat". The register should be called "comstat".
Page 259-- In line 8 (beginning at the top of the page), the reference to "IICOMS.TXT" should be changed to "IICOMS.GRP".
Page 417--After the label "sspad1", change "portb" to "portc".
Page 425--Two thirds of the way down the page, change "movlw 034" to "movlw 035" and delete "SPI clock-osc/64" on the second line below that.
Page 491--Change
"dslin3 btfsc" to "dslin3 btfss".
Page 492--Change
"goto dslwr4" to "goto dslwr5" in two places.
Serial Communications - Version 3.0
Page 465--IVORY1.ASM
Between the sspif and peie equates, add the following equate:
sspie equ 3 ;pie1 ssp interrupt enable
Between the code lines
movwf trisc
and
bcf status,rp0
add:
bsf pie1,sspie ;enable ssp interrupt
Easy Debug'n - Version 1.0
Page 12 - In the table under File Address, "0x0E" should be "0x09".
Easy Step'n - Version 1.0
Page 62 - Schematic - There is no +5V connection to the ULN2803A board. The terminal block at the top of the ULN2803A board should have 2 terminals, not 3.
Page 65 - Schematic - There is no +5V connection to the TIP120 board. The terminal block at the top of the TIP120 board should have 2 terminals, not 3.
Through a sharp reader's experience, our own mistakes, and the effort required to correct them, we have determined that the SLA7024M experiment presented in Easy Step'n is not suitable for experimenters because tweaking of the IC manufacturer's recommended circuit may be required to obtain proper performance when driving a specific motor.
The SLA7024M and the manufacturer's tech support are excellent. The hand tailoring required is fine for experienced engineers developing a commercial product, but not for the experimenter just learning about stepper motors.
Please ignore pages 121 through 126. The concept is correct, but making it work for a given motor can be a bit of a trick in my experience.
The output of the circuits shown in both schematics on page 147 should be connected to a 270 ohm resistor in series with an LED connected to ground. This LED serves as an indicator. If the sensor slot is blocked, the indicator LED will be off.
The terminolgy used in the description is wrong or inconsistant. Please make the following changes:
Page Text Line As Written Should Be 147 5 infrared diode sensor LED 147 6 infrared radiation light 147 9 infrared light 147 9 the LED the indicator LED 148 13 LED turn off indicator LED turn off 148 13 the LED the sensor LED 149 7 (ie. LED (ie. indicator LED
EASY CNC - Version 1.0
Change as follows:
After File>Export, insert the line
The Export dialog box will appear.
After the first Click Export, delete the following four lines:
The Export dialog box will appear. Enter your file name. Select save as a GIF file. Click Export.
The next line (correct) reads:
The Convert to Bitmap dialog box will appear.
The second crop dot did not make it onto the printed page. It should be at the lower left-hand area of the image.